Bobbin stripper



y 1953 w. v. GOODHUE ET AL 37 BOBBIN STRIPPER Filed s- 25 1949 a Sheets-Sheet 1 9102125018: oazihzze EMarl'an mu-1 M, MM 542 v flflornqys.

May 19, 1953 w. v. GOODHUE ET AL 2,633,937

BOBBIN STRIPPER Filed Aug. 25, 1949 8 Sheets-Sheet 3 ii'omgys.

May 19, 1953 w. v. GOODHUE ET AL 2,638,937

BOBBIN STRIPPER I Filed Aug. 25. 1949 8 Sheets-Sheet 5 VL z'llz'mn VGood/zue a RoberfiEMori' on 59%, M, MMJZL MUM May 19, 1953 w. v. GOODHUE ET AL BOBBIN STRIPPER Filed Aug. 25. 1949 8 Sheets-Sheet 6 fienl ars: jamfaoo dhlle m a oberl'EMarl'an May 19, 1953 w. v. GOODHUE ET AL 2,538,937

BOBBIN STRIPPER Filed Aug. 25, 1949 8 Sheets-Sheet 7 1a 64 I bzdenbors:

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May 19, 1953 Filed Aug. 25, 1949 W. V. GOODHUE ET AL BOBBIN STRIPPER 8 Sheets-Sheet 8 Patented May 19, 1953 BOBBIN STRIPPER.

William V. Goodhue and Robert E. Morton, Warwick, 'R. I., assignors to Universal Winding Company, Boston, Mass., a corporation of Massachusetts Application August 25, 1949, Serial No. 112,362

This invention relates to a bobbin-stripper for removing the residue of yarn remaining in the bunch or reserve winding on the bobbin after the service winding has been exhausted in the shuttle of a loom.

One object of the invention is to provide an automatically-operated bobbin-stripper for receiving spent bobbins discharged from the shuttle of a loom, removing the yarn remaining thereon after the exhaustion of the service winding and delivering the stripped or denuded bobbins to a conveyor for transporting them to a winding machine to again fill the bobbins with weft or filling yarn.

Another object is to provide a device of the character specified which may be applied to use in cooperation with an automatic loom for receiving the bobbins as they are ejected from the shuttle by the filling-changing mechanism and removing the residual yarn therefrom. I

Another object is to provide a device of the character specified for catching the bobbins as they are ejected from the shuttle, retaining the length of yarn trailing from each bobbin and unwinding it therefrom while discharging it into a receiving compartment or container for the waste.

Another object is to provide a device of the character specified in which the bobbin ejected from the shuttle is caught and held in upright position, the remaining yarn on the bobbin unwound therefrom, and the stripped bobbin transferred to a conveyor, with the several operations accomplished automatically in recurring cycles.

Another object is to provide a device of the character specified adapted to operate in synchrony with the operation of the fillingchanging mechanism in automatic looms of various types.

Another object is to'provide a device of the character specified including a bobbin-conveyor having magnetic means for picking up the bobbins from the stripper as they are delivered therefrom after the stripping is completed to transfer the empty bobbins to a winding machine or other apparatus.

Another object of the invention is to provide a bobbin-stripper of simple construction and compact design adapted to be attached to the frame of a loom and actuated by the power means thereof.

Further objects of the invention are set forth in the following specification which describes a preferredform of construction of the bobbin- .32 Claims. (01. 139-262) stripper as illustrated by the accompanying drawings showing it applied to use in connection with the filling-changing mechanism of two different types of looms. In the drawings:

Fig. 1 is a side elevational view of the complete bobbin-stripper shown as applied to the side of a loom embodying filling-changing mechanism employing a rotary batter for reserve bobbins;

Fig. 2 is an enlarged side elevational view of a portion of a loom with a part of the bobbinstripper shown in connection with filling-changing mechanism employing a vertical hopper for containing the reserve bobbins;

Fig. 3 is an enlarged side elevational view of the complete bobbin-stripper showing'the walls of its casing as partly broken away at the top to illustrate the conical drum or mandrel on which the yarn from the bobbin is wound during the stripping process and illustrating the driving means therefor;

Fig; 4 is a front elevational view of the stripper with the forward walls of the casing shown as partly broken away'at the bottom to illustrate the receiving and holding means for the bobbin and the conveyor-belt carrying a magnet or magnets for lifting the bobbins and transporting them therefrom;

Fig. 5 is a still further enlarged View of the winding-on cone or mandrel which withdraws the yarn from the bobbins, showing the reciprocating fingers for pushing the coils of yarn off from the cone; the casing of the device being shown in vertical sectional view to disclose the driving'mechanism for the cone and the cam which reciprocates the fingers;

Fig. 6 is a rear view of the device shown with v the lower housing in vertical section to illustrate the main drive-shaft and the driving connections for the cam which reciprocates the bobbinejector slide and also illustrating the drive for the conveyor-belt carrying the magnet for lifting the bobbins out of the bottom pocket or receptor, which latter is shown as having its side wall partly broken away;

Fig. 7 is an enlarged detailed side view of the reciprocating means for turning the ratchet-disk which rotates the main drive-shaft;

Fig. 8 is a vertical sectional view of the ratchetmeans taken on line 88 of Fig. 7

Fig. 9 is an enlarged plan view of the means for catching the bobbin and the clamping means for holding it while it is being stripped with the walls of the casing shownpartly in section; Fig; 10 is an enlarged elevational view of the bottom portion of the casing showing the bobbin- .to the end wall ll of the housing 2.

plate 25' is received in a groove at the;v bottom of the casing 20, see Figs. 1 and 3. "I he rearward compartment has its side walls and its'rearward wall seated on the .fiat top of the housing 2 while the side walls of the forward compartment project downwardly a slight distance therebelow with their lower ends fastened by screws 28 to the sides of a bracket-like,shelf-21 projecting forwardly from the side of the housing 2, see Figs. land l0. Q

The pocket or receptor 1 for holding v, the stripped bobbins may be constructed of sheet metal with a bottom wall 29 curved upwardly at its ends and the outer end wall 30 fastened at 3| Thejrear-e ward portion of the side wall 32 01? the receptor 1 is extended upwardly and fastened to a recess in the side wall 9 of the housing-2 byscrews 33, see Fig. 6; while the front wall is cut away at the top as shown by dotted lines in Fig. 6 to-provide an opening for viewing the bobbins dropping into the receptor 1 to be lifted out therefrom by the conveyor described later.

Referring to Figs. '1 and 2, a chute 35 is:pro.-

vided above the casingjil for directing the spent bobbins-down through the opening in the top of the stripper compartment 5 as they are ejected from the shuttle S. The chute 35 may be constructed of sheet-metal with vertical side walls 36 and an inclined rearward wall 31 terminating in a curved lip 38 which enters the opening in the front of the lay L when the latter moves forwardly to beat .up the filling during the weaving process. The front wall 39 of the chute 35 is provided with a flanged extension 49 fastened to the side of the loom by screws ll see Figs. '1 and 2. 9 Below the chute 35 is a rotarycbrush v45 arranged with its axis off-set at one side thereof as shown in Figs. 4 and 6 so that one section of its radial bristles are disposed to underlie the opening in the bottom of the chute. Referring to Fig. 5, the brush 45 is constructed with a hub 46. in which the bristles 41 are secured with their greater length projecting radially from its periphery. The hub 46 is mounted on a screwthreaded spindle 48 andabove andbelow the hub are concave-convex disks 49 and 50 clamped in place by a nut 5| on the spindle to cause the edges of the disks to confine the bristles 4'! in close association as they radiate from the hub. The spindle 48 projects upwardly from the end of a larger shaft 52 journaledv in a bushing 53 held in a bore 54 in a lateral projection 55 on the upper end of the housing 3. The upper shouldered end ofthe shaft 52 seats in'a cupped portion of the lower disk 50 which is held in a recess in the hub 46. Fast on the lower end 'of the shaft 52 is a beveled worm-gear 60 for rotating the brush 45 by means described later.

A cylindrical guard or' shield 52 is mounted at the top of the compartment 5 of the casing 20 with its forward end projecting through a circular opening in the partition wall 25 and its opposite end fastened to the rearward wall 22 of the casing by means of screws 23 inserted through angular tabs 54 welded to the cylinder as shown most clearly in Fig. 4 and at the bottom of Fig. 2. The cylindrical guard or shield 62 surrounds and encloses the tapered mandrel or conical drum 65 on which the yarn is Wound to strip it from the bobbin after the latter has-dropped down into the compartment 5 of the casing 2.9. r A triangularly-shaped opening t6 extends. throughout nearlylso; degreesiof the circumference ofthe 6 shell. fi z -at oneside thereof-for the ingress of the end of the yarn .therethrough to adaptityto be caught and wound aroundthe drum .65 as it is swept toward the latter by the rotating brush ing through the front wall of the housing 3'.

The forward bushing -'l2 -is fitted to-the bore of astationary cam-cylinder 15 which is fastened against the face of the front wall ofthehousing 3 by means ofscre-ws l6. The-rearward peripheral portion ofthe .mandreltor drum 65 is constructed with an integral. projecting annulus ,or ring H which forms the support for acylindrical shell constituted as a hollow worm fill. The hollow worm 89 is fitted snuglyto; the periphery .of the annulus 11 and held in-place by two pins BI, see Fig. 3, projecting radiallyfrorn opposite sides of the annulus into engagement with L-shaped slots 82 and 83 in the worm-cylinder to fasten the latterin place thereon for with the coneor drum 65. I

The worm-cylinder is provided withahelical thread... 85 meshing with the teeth on the worm-wheel .9303; referred to previously as-the means for rotating the shaft 52 which carries the brush 45., The annulus H is provided with a plurality of transverse slotstt forming guideways for a seriesof bar-like fingers .81 slidable therein and held in place by the worm-cylinder 89 which overlies its periphery. Preferably, six fingers 8'! are provided; spaced equidistantly around the drum 65 in theslotstfi. with their rearward ends formed with slots; 88engaged by a helical projection or thread 90 on the periphery of the cam-cylinder 15. The forward ends of the fingers Sl are undercut at 89--toadapt themto overlie the periphery of the drum 65 inv spaced relation thereto for engaging the yarn therebeneath as it is carried through the opening 66 and attaching its end tothe drum. Thefingers 81 are 'reciprocated longitudinally of the drum 65 by the helical thread onthe stationary camcylinder 15 as the drum 65 and its, annulus H are rotated relatively'thereto by the shaft 79. The slots 89 in the annulus; ll are recessed below the periphery of the drum-65 to a slight extent so that the outer ends of the fingers 81 will slide therein with theirundercut portions closely overlying the periphery vof the drum to engage with the coils of yarn wound therearound. In this way, after a series of coils of yarn have been wound on the cone or drum 65 the yarn will be pushed or swept outwardly towards its smaller end to eventually discharge it therefrom. As the coils are discharged from the end of the drum the yarn willdrop down into the wastecompartment 6 of the casing :20 for. removal therefrom through a cover or door 9| atv the .front thereof. The shaft l9. whichrotatesthedrum 55 and worm 89 is driven by a. bevel-gear 93 fastened thereto by a screw 94 with its teeth'rnesh-ing with those of .a similarv bevel-gear 9-5 keyed to a" ver't'i cal shaft 9Bby'a screw 97. The shaft 96 is journaled in bushings 9s and 99 held i bores atthe top and bottom or thehousing s; seerigs. 3and 6-, and carriesabevel-gear lllll'fa'st onits lower end with itsteeth in mesh withthose on a-la'rgei rotation In 5 in-thelower housing: 2;

The drive-shaft I 05 is jpurnaled in bushings I06 and HIT held inbores inthe housing 2* and is connectedto: be driven from the-pewer-operated mechanism of the loom. Forthis purpose the drive-shaft I'M-carries a ratchet-disk IHJ, seeF-igs; '7 and 8; rotated by a pair'of' reciprocateri arms I I-I and I=I 2- that are pivoted together by; a pin II -3; The outer ends of the-- arms- III and M 2='arepivotally' connected to pawls I'M and M5 by studs H8, The-pawls I'IWa-nd' H5 are pivotally mounted on studs I W carried by a pair of rockable members I I8 'and H9 rotatable on bushings IZWfaston the shaft I 05 at" opposite sides of tiie ratchet-dishi HI. A wire-spring I 21 coiled around the bearing hubs I 22 of the two arms 'II l and I12- has its ends extended in straightlegs I23 and I24 with their ends hooked respectively-around the inneredges-of the arms H1 and .I*I-2,'thereby tending toswing the arms apart about the pivot-stud II3=. As the arms II I and I I2 are reciprocated together in opposite directionsthe pawls H4 and H5 operate alterna'tely; to rotate the ratchetedisk. I I and thereby turn the drive-shaft I with a substantially'centinuous motion. For example, when the arms I and H2 move -to-theflright, asviewed in 7, the pawl ll5 will be rocked about itspivot I I 7 toengage its pointed toe-with one of the teeth I25 on the ratchet -disk III) to rotate the'latter in contraclockwise direction; While ontheother hand; 'wh'en thearms III and I12 are moved to the left thepawl H4 willbe-rocked on its -pivot Iii-Into engage-its toe with one ofthe teeth ['25 of the-ratchetadish Mil-to continue its rotation in-thesa-rne'di-rection.

Referring particularly-to Figs.- 1 and 3, the arms H1 and H2 are connected for reciprocation to an elbow-shaped lever I rockabl'y mounted on-a pivot-stud I3-I held in alugat' the bottom-ofthe end wall III of thacasing 2. The upper-angular arm I32 ofthe-lever I30 is bifurcated at: its outer-end with the sidesof the fork I33" straddling the hubs of the arms H1 and I I2: and connected thereto by the pivot-pin 3 held by a-set screw I34. A link l-35 is pivotally connected to the elbow-portion-of the lever I'SIIsby-means of-abolt I36 with its'oppositeend connected to a second lever- I'-3-'I by a bolt I38; see Fig. 1 The link I35 is preferably adjustable in length, being constructed withtwo teles'copic screw-threaded sections I39 and I40: The lever I37 is-securediastto thereon-shaft I'M'that car ries the swordsl which mount the lay- L for reciprocation in the-loom, see Fig; 1. T-hefoot of the lever- I3 1 seatson-thetopof a tubuiar'ex tension 'IM' 'of: the :shaft M l-with a semicircular strap M3 underlying it; Bolts I44 projecting through-the foot of the lever ltT-and 'the endsof the strap I I43-with nuts I 45* thereon clamp-tirelever I 3 rigidly-tothe shaft I41; It-willbeobvious thithaatheshaft I41 rocks back and forth during the-reciprocation of the layhon theswords Z the lever I31 will bra-oscillated to rock the lever I30 amid-hereby" reciprocate the-arms Iii-and H2; shown inwEig; 7, toitin'n the ratchet-wheel I I 01 and: rotate-the shaft I 05 The: shaft 'I 65 besides driving thewertical shaft Qfitoyturn the upper shaft; Wrand: rotate-the drum a and worm 8d is also connected to driveotherypartsrof: the machanismI-asdater described;

Referring: to. Rigs; 1, and 2; it has; been. stated that the bobbin 1); carryingthabunolr or; reserve yam; adjacent its; butt; end; is: dropped down bevel'f-gear [02 fast/ on a horizontal drive-shaft through the-chute 35 to enter-the opening in the top oft he compartment 5-in thecasingio. During' the descent ofthe-bobbinin thecompartment 5 the end of the yarn strand 1/ isheld by the brush 45 and swept through the opening 66 in the shield GZyseeFig. 5; to-attach it to the rotating mandrel ordrum--65. As-the bobbin 1) enters the chute -3 5 its downward progress therethrough is checked by striking-against a bafil'eintheform of a pendent curtain I46. The curtain I46 may be on heavy duck or any "suitable material suspended at the-top by a rod I41 andweighted at the bdttombyanother rod: me of relatively heavy metal; The butt end of the bobbin 11 being heaviest tendsto-oarry the bobbin down insubstantiallyvertical relationship and as it strikes against the curtain or baflie I46 its momentum is checked before-- it passes out ofthe chuteand slides through: the bristles of the brush 4 5-to' enter the compartment-5;

"I10 check the descent of thebobbin down into the bottom of the stripping compartment 5- and insure that it is properly held thereinit is: first received on a latch-plate or step I59 shown in detailsin'Figs. 9; 10', 1-1 andIQ The-latch-plate or step Iiitispivotally mountedon a headedpin I511 extending between theears- I52 of arockable arm I5'3lhinged to-theside wall' l'l of the casing 20; The arm I53 has'ears I54 at itsupper end straddling-lugs- I55 on the wall 21 and pivoted theretoby apin I 56 A wirespring I51" coiled around'thepinv' I56, see Fig. 9, hasone end bearing against?alugztliiwith its opposite endengaging the edgeflof the bent end' of thearm- I53 whereby it tendsto iorcethe arm-against the'sideof the casing 20: to swing the; latch-plate or step I50 through an opening I58 therein and position it within the compartment 5 as shown in Fig; 12. Coiledl around: the: pinI FiI is a-spring I59 having one: end: 'engagedaina notch in one oftheears I52 onzthearm Iitfizwith itsoppesiteend bearing against: the. under; sideof the: latch -plate I50 Wherebyit' tends to-swing the-latter upwardly as shown Ei'g. 12; The rearward depending portion of the; latch=plate Ifiii strikes against the b8GkflOfI.th8 armaI53tto limit. the rocking motion of the; plateeimthisadirectio'n; Aireel-likeprojection, IIiIl. extends downwardly from the bottom offi-thmplateior stepad 5i] in. a plane inclined to its sideand, has itslower edge beveled or extended in ulan'relation-toctheihorizontal at I61. The keel-plate: Ififlris, provided: for engagement with reciprocable means which acts to swing-theiatchplate; or. step lfilltoutwardly from the compart ment 5 through thevopening l58,:see Fig. 11*, and cause; the. bobbin 1)) to. slide. off: therefrom in the manner, and for: the purpose as-1ater more fully explained,

As. the bObbiIIi-b isareleased'from the latch-plate or step I50? it. dmmgdowna to, seat: its butt end against, a,. ledge; on rest, l fiiz formedby the flat upper wall of the. housing 2,isee Figs. 3: and 11 During thislattergmdvement ofi'the bobbin 5 its butt end :is guidedby inclined plates I 631and- I 54 which serve as guardsat the sides of the-compartment 5, shown .by dotted; lines-inFig; 3" and full lines: in thezplantviewuFighii. Inord'er to hold the bobbinfiagainst upward movement under the force of; drawing offwthe; yarn, from the bunch it issecured fixedly on1thershelf. or. rest I GZby gripping; orrclampingmeans as next: described.- Located-just above theshelf IE2 at the rearward sideaof the. compartmnet 5 are a series of horizon-.- tahgrooves lfifizformed in the projectin-gportion ofia transversebar. lfifi which rests on the shelf I62 and the end wall of the housing 2'. The bar I66 is of rectangular'shape in cross-section and extends the full width of the casing 20 between its side walls 2| with screws I61 fastening it to the upright side wall 69 of the housing 2, see Fig. 3. The grooves I65 are bevel-sided or V-shaped and adapted to receive and engage the surfaces of wire rings 1' surrounding the butt or head of the bobbin 1); such rings being of conventional form for holding bobbins in the jaws of loomshuttles. A relatively flat clamping arm I10, see Fig. 9, pivoted on a stud I1I screwed into the top wall of the housing 2 has its outer end shaped with a concaved portion I12 terminating in an angular extension I13. A helical spring I15 formed with a loop at one end hooked through a pair of holes in the clamping arm I10 has its opp'osite end anchored to a stud I16 screwed into the side of the bar I66. The spring I15 tends to swing the arm I10 towards the bar I 06 at the rear of the casing 20 with its movement in this direction limited by an upstanding stud I11 against which it strikes, see Figs. 9 and 10. After the bobbin 1) has dropped onto the ledge or shelf I62, as shown in Fig. 11, it is forced laterally to the right as viewed in Fig. 9"t'o cause its butt to slide along the angular extension I13 on the arm I10 until its rings 1' seat in the concavity I12 of the arm. The arm I10 is thus caused to swing outwardly against the tension of the spring I15 andeventually, as the rings 7' on the butt of the bobbin seat in its arcuate recess or concavity I12 they will engage in the grooves or recesses I65 in the bar I66 to rigidly secure the bobbin 1; in upright position. It will be understood that this transfer of the bobbin from .the latch-plate or step I50 takes place quite rapidly so that the bobbin will be firmly gripped and secured in place at the bottom of the compartment before any considarable tension has been applied to the yarn drawing off from the bunch and being wound on the drum or mandrel 65.

The bobbin 1) is moved laterally to be clamped between the grooved face of the bar I95 and the clamping arm I by means of a reciprocating slide I80 shown in Figs. 9 to 13, inclusive. Referring particularly to Figs. .10 and 13 the slide I80 is preferably. constructed in the form of a sheet-metal barhaving a depending projection or lug I82, see also Fig. 11, offset laterally from its main portion. The slide I 80 is mounted to reciprocate in 'a longitudinal slot or guideway I83 cut into the rearward side of the bar I66 with its laterally-offset lug I82 projecting therebelow. Seated against the top and rearward side of the bar I66 is a plate I85 of right-angular cross-section having its rearward vertical portion I86 overlying the slot I83 in, engagement with the rearward faceof the slide I00, as shown in Fig. 13, to take the lateral thrust thereof. This portion I 86 of the plate I85 is cut away at the bottom to form an opening I81 providing clearance for the lug I 82 to reciprocate therein. The wall of the casing 20 is also cut away or formed with an opening I84 for this same purpose. The plate I85 is fastened down on the bar I 65 by a pair of screws I88 and extends toward the left as viewed in Fig. 12 clear through the .opening l59 in the side wall H of the casing 20. The end portion of the plate I85 forms the support for the angular guideplate 564, previously referred to, which is integral therewith and bent upwardly therefrom as'shownmost clearly in Figs. 3, 11 and 13,

10 with the upper end of the guide-plate bearing against the side of the compartment 5.

Referring to Figs. 10 and 13, the slide I is formed with a horizontal overhanging portion I90 projecting forwardly through a slot or recess I9I in the top of the fixed bar I86. This overhanging portion or arm I90 is formed with a downward projection or vertical finger I92 constituted as a pusher for sliding the bobbin toward the clamping means in the bottom of the compartment 5 when the slide I80 moves toward the right, as viewed in Fig. 11. The arm I90 is also adapted to engage the edge of the keel I60 on the latch-plate or step I50 to swing the latter through the opening I58 in the side wall 2| of the casing 20 when the slide moves toward the left, as viewed in Fig. 11, tocause it to release the bobbin b from the step. For this purpose the finger I92 is formed with a shoulder I93 for engaging the vertical edge of the keel I60 on the latch-plate I50 as shown in Fig. 11. On the other hand, the rounded bent portion of thefinger I92 is adapted to engage the beveled edge of the keel I60 on the latchplate I50 when the slide I80 moves in the opposite direction or toward the right, as viewed in Figs. 11 and 12, to lift the latch-plate should it be depressed by a bobbin resting thereon so that the finger I92 may pass by the keel.

The slide I80 is reciprocated by a cylindrical cam I95 fast on and rotated by the drive-shaft I05 previously described, see Fig. 6. The cam I95 is secured rotatively to the shaft I05 by means of set-screws I96 as shown in Fig. 13 and is formed with oppositely-directed crossing helical grooves I91 and I98. A lenticularshaped shoe 200, see Figs. 12 and 13, is pivotally mounted on the slide I80 by means of its stem 202 journaled in a bushing set into a bore in the lug I82 on theslide I80. The shoe 200 engages with the grooves I91 and I98 of the cam I95 to cause it to reciprocate the slide I80. The back and forth reciprocation of the slide I80 is substantially continuous as the shaft I05 is rotated by the ratchet means previously described. The slide' I80 also serves as an ejector for forcing the next bobbin released from the rest I50 against the bobbin in the clamping means to eject the latter therefrom and cause it to drop through an opening 204 in the bottom of the casing 20, see Fig. 9, and be received in the pocket or receptor 1 where it reclines on the bottom thereof as shown in Fig. 6.

The stripped bobbins b are lifted out of the receptor 1 by conveyor-means next described. Referring to Fig. 6, the drive-shaft I05 has a worm 205 held fast thereon by a set-screw 206 with its teeth meshing with a worm-wheel 201 carried by a shaft 208 which is journaled in bearings at the sides of the housing 2, see Fig. 3.- The shaft 208 carries a pulley 209 around which passes a conveyor-belt 2| 0 of any suitable form or construction. As shown in Fig. 6, the two lengths of the conveyor-belt 2 I 0 extend upwardly to and pass around idler pulleys (not herein shown) which may be located near the upper part of the loom or at any other desired location adjacent a bobbin winding machine for rewinding the bobbins as they come from the stripper. As herein illustrated the belt 2I0 has suspended therefrom one or more permanent magnets 2 of horseshoe-shape, as shown by dotted lines at the bottom of Fig. 3. The magnets 2II may be suspended from the belt 2I0 by means of straps 2I2 pivoted to ears 2I3 fastened to the belt 2M As the pulley 299 is rotated. with the shaft 21% by means of the worm 2G5 and worm-wheel 20?! the belt 2H3 will be carried in clockwise direction therearound as viewed in Fig. 6. The magnets 2!! will thereby be lowered. into the pocket or receptor 1 to pass above the recumbent bobbins b and drag across the wire rings r thereon to attach them thereto. Then as the belt travels upwardly the bobbins will be lifted out or the pocket or receptor i and remain suspended from the belt as indicated by dotted lines in Fig. 6 to transfer them to a location where they may be delivered to the magazine of a winding machine to supply them with filling yarn for the loom. As before indicated the winding machine may be at the loom, or at a location remote therefrom as desired.

The stripped yarn discharged from the mandrel or drum 65 falls into the compartment 6 and the accumulation may be removed there from periodically by opening the cover or door 91, previously referred to, see Figs. 1, 3 and 9. The door 95 is hinged at thebottom of the casing 20) on pins 2:56 to adapt it to swing outwardly at the top, a circular hole 241, see Fig. i, being provided near its top for the insertion of the finger and also for use as a sightopeningto disclose the amount of waste yarn discharged into the compartment E. Springlatches 2 is shown in Figs. 4 and 9 are arranged to snap over buttons: 2 as on the interior of the walls of the: casing M to latch the door in closed relationship.

The construction and arrangement of the present improved bobbin-stripper having now been described in detail its method of operation is explained as follows: The present bobbinstripper is. adaptedparticularly tor use in cooperation with automatic looms having fillingchanging mechanism for replenishing the filling yarn in the. shuttle. However, it also may be employed for other applications with the bobbins fed thereto: either from a. conveyor or manually.

Fig. 1 shows the stripper applied to use with a conventional type of loom having a. rotary bat tery B for supplying full bobbins to the shuttle S; and Fig. 2. illustrates it in connection with a different type or loom in which the wound bobbins are supplied frornav vertical hopper; Auto.- matie looms employ a :Eeeler-Inotionfor testing the amount of yarn in the operating shuttle and when substantial exhaustion of the service winding on a bobbin is indicated, the filling-changing mechanism operates to. transfer a fresh bobbin to the shuttle and simultaneously eject the spent bobbin therefrom. For this, type of. l'ooin the bobbins are wound with a reserve winding or bunch at the butt end to insure that, the yarn. will not out after the service winding is exhausted to cause mispicks in the cloth; that is, to provide sufficient yarn on the bobbinduring the last picks of the shuttle to prevent it running out before the bobbin is ejected: therefrom.

Referring to Fig. 1', the fresh bobbin is inserted in the shuttle by a transferer l? which is rocked downwardly by the operation of the fillingchang-ing mechanism and as the full bobbin is pressed against the spent bobbin it forces it down through the bottom of the shuttle S, whence it drops down through an opening in the lay L. Fig. 2. illustrates a slightly diiierent form of transferer T which operates in the same manner to carry the full bobbin down into the shuttle and eject the spent bobbin there-from.

The spent bobbin b is received in the upp r end of the chute 35 as the lay L reaches its forward position and as the bobbin descends therein its heavier butt end will tend to fall first with the tip end pointing upwardly. During the descent of the bobbin in the chute 35 it strikes against the bailie or pendent curtain 146 tocheck its fall and retard its motion, whereafter it drops through the opening in the bottom of the chute to be received in the compartment 5 of the stripper. As the bobbin leaves the chute 35 it passes through the bristles 4 of the rotary brush 45 and the trailing length oi": theyarn y which has been severed from the cloth will cc-caught in the bristles and rotated by the brush to carry it through the opening 66 see Fig. 5, in the cylindrical shield 52. As the bobbin .b drops down through the compartment 5 the trailing yarn y is thus carried across the periphery of the rotating drum or mandrel 65 and caught under the ends of the reciprocating fingers 81 to cause it towind on the drum. The descending bobbin is initially received on the latch-plate vorastep L50 adjacent the lower end of the compartment 5:, see Figs. 9 and 1.0, the step being maintained normally in upward inclined relationship, as shown in Fig. 12, by its spring L55 with the weight of the bobbin tending to rock it downwardly into horizontal position. With the. latch-plate. tilted. upward the shoulder [.93 at the. end of the ejector-slide [.89 will clear its keel Hi0 when the slide moves to the left during. intervals when there is. no. bobbin on the plate. Consequently, the. slide is free to reciprocate. back and forth without engaging the. keel 1:60 to rock. the latch.- plate t5i'l until the bobbin is seated. thereon. When. a bobbin becomes seated on the latchplate. 5% it acts to. rock. the. plate. downwardly after the. shoulder [931 on the slide [.80 has moved to the right. past the keel 1.6i1 on the plate- At the. next movement. of the slide 1 80 toward the left, as viewed in Figs. 1]; and. 12., the shoulder 19.6. on the slide. will engage against the vertical edge of the. keel [6.0 and as the slide continuesits movement in this directionit will carry the latch-plate or'step [50' outwardly through the opening [5% in. the side of the. casing 21] with itssupporting arm I53 swinging on hinge-pin [56. Under this. action. the. bobbin seated; on. the. plate I59 will. be caused to slid'e oit therefrom and drop down into the bottom of the. compartment 5 to. rest on the ledge. [62. Then. as the slide. moves back to the right again its depending finger I92 will engage with the rings. r on the head- 01? the bobbin and slide the latter to the right to enter the rings in the clamping means. As the bobbin is moved toward the right the ringsr will; slide along the inclined end l-Tii' oi the clamping arm I218, see. Fig. 9, to rock the latter forwardly to. adapt. it to receive the rings in the concaved portion H 21 oi the arm. As the ringer on the. bob-bin pass. beyond the i mzli ned portion ti'rt: oi the arm. in the tension of the spring I1 5 will swing. the arm toward the rear of the compartment 5 to seat the rings in its concavity H2 and grip them in the tapered grooves Woof the; stationary bar- I68, see Figs. 1-1 and 12.. Itsh-ould; be explained that the spring pressed action of the clamping arm- I'mmoves the bobbin b toward the: right with its rings 1? engaged in the grooves M5 so. that the bobbin will be carried-. slightly beyond the finger I92- on the. slide I80 to prevent its further contacttherewith. Thisprovidesthat there will be clearance between the. finger L92 and the rings; r on the bobbin. b as the. slideial 13 continues its reciprocation and reaches the righthand end of its stroke. It further is to be noted that should a bobbin drop onto the latch-plate or step I50 and swing the latter downwardly after the shoulder I93 on the slide I has moved to the left-hand end of its stroke, then as the slide moves back in the opposite direction or to the right the rounded upper portion of the finger I92 on the slide will ride along the beveled lower edge of the keel I60 of the latch-plate I50 to lift the latter slightly with the bobbin-b remaining thereon. However, as the finger I92 rides out from under the keel I60 on the latch-plate I50 during the movement of the slide I80 toward the right, the latch-plate will be allowed to drop again to return the bobbin into normal position, as shown in Fig. 10. It will now be understood that the latch-plate mechanism is in the nature of a safety device to insure that each bobbin falling into the stripping compartment will be in its proper relation to the clamping means before it is shifted laterally to engage it therewith. For example, if thebobbin were to fall directly into the bottom of the compartment 5 it might strike the ejector-slide I00 as the latter moves toward the left and consequently during the next reciprocation of the slide to the right, as Viewed in Figs. 9 and 10, the holding rings r would not be properly engaged with the grooves I65 to secure the bobbin in correct position for stripping. As herein arranged the latch-plate or step I50 catches the bobbin as it falls into the compartment 5 and holds it until the slide I80 has moved toward the right so that at the next opposite movement of the slide it will swing the latch-plate to release the bobbin and cause it to fall into position to be engaged by the pusherfinger I92 when the motion o'f the slide is reversed with the finger moving to the right. In this way, accurate and positive application of the bobbin to the clamping means is assured to hold it in proper position for stripping.

' The stripping operation is effected by winding the yarn 11/ onto the drum. or mandrel 65, see Figs. 3 and 5, after the trailing end has been caught under one or more of the reciprocating fingers 8'5. As. the drum 65 is rotated by the shaft I0, which is driven by the gears 93 and 95, the fingers 87 are carried around-therewith with the slots 38 at their rearward ends in engagement with the helical teeth 90 on the stationary cam-cylinder I5. Through this connection the fingers 8? are continuously reciprocated to slide them in the slots 86 in the annulus HI and ad- Vance them in sequence toward the outer smaller end of the drum 65. Consequently, as the winding yarn accumulates on the drum or mandrel 55 while drawing upwardly from the clamped bobbin b, the fingers 8! push the coils off from the end of the drum to discharge the yarn into the compartment 3; it having been previously stated that the waste yarn accumulating in this compartment may be removed. through the door 9|.

A guide-rod 5! formed with an arcuate bend toward its outer extremity is fastened to the wall of the casing 3 by one "of the screws 23, previously referred to, see Fig. 5. The rod 5'! acts as a guard for engaging the barrel of the bobbin b as it drops down into the compartment 5, thereby tending to straightenthe bobbin into upright position should it have a tendency to cant or incline at a sharp angle to the vertical, see also Fig. 4. g I It has been explained that theshaft I0 and.

rotating drum 65 are driven from the verticalshaft 96 by the gears 93 and 95 and. also that the shaft 96 is driven from the horizontal shaft I05 in the lower housing 2. The shaft I05 is driven ii through; the ratchet-mechanism, previously describedand shown in Figs. 7 and 8, by the oscillation of the lever I30 connected to the arms III and II 2 which carry the pawlsll l and II 5 for turning the ratchet-disk H0. The lever I30 is connected by the link I35 to the lever I3! fast on the shaft MI which oscillates with the reciprocation of the lay L of the loom; it being understood that in other applications of the stripper the drive-shaft I05 may be'driven from a motor or other source of power.

The; slide I is reciprocated continuously by the cam I on the shaft I05 and its motion is so timed that it acts as an ejector to release the bobbins from-the clamping means and push them into position to drop down into the pocket or receptor I. The ejection of each stripped bobbin takes place only after another bobbin has been released from the latch-plate I50 to be engaged with the clamping means. As the newly-received bobbin drops down onto the shelf or rest I62 at the side of the stripped bobbin the ejector-slide I00 starts to move toward the right, thereby causing its finger I 92 to engage'the side of the newly-received bobbin and push it against the bobbin that remains in the clamping means. The continued movement of the slide I80 toward the right will therefore slide the newly-received bobbin into the clamping means while pushing the previously-stripped bobbin out therefrom to cause it to dro into the pocketor receptor 1.

Referring now to Fig. 6, the stripped bobbin b slides down into the bottom'of the pocket or receptor I where one of the magnets 2'I I carried by the conveyor-belt 2l0 will draw across its holding rings 1' to attach itself thereto 'and'as the belt travels upwardly the bobbin will be suspended and carried along therewith as indicated by the dotted lines in Fig; 6. It will be understood that the arrangement of the magnets may be modified to attach the stripped bobbins to the conveyor-belt 2I0 in other positions and transport them in different directions from that shown in Fig.6 in accordance with the purpose of the transfer. In the present instance, the Ver tically-traveling conveyor-belt H0 is employed While the device is herein described and illustrated in its preferred form, it will be understood that modifications may be made in the structure and arrangement of its parts without departing from'the spirit or scope of theinvention as .expressed in the. following claims. Therefore, without limiting I ourselves in this respect, we

- claim:

15 maiiiing on said bobbin, and means for ejecting theoenuded bobbin fr'om the stripper for transfor to another location.

2. For use with 'a loom having filling-changing mechanism for supplying reserve bobbins to the shuttle and ejecting spent bobbins therefrom, a bobbin-stripper having" means for receiving the spent bobbin ejected ii-om the shuttle, clamping means for rigidly holding the bobbinin fixed position in the stripper, and n'i eans for Withdiavc ingthe residual yarn from the bunch on the bobbin. I

3. For use 'Wi tlia loom havin filling-changing mechanism in supplying reserve bobbins to the shuttle and ejecting spent bobbins therefrom, a casing for receiving the spent bobbins ejected from the shuttle, means for holding each bobbin in Inxed positionin the casing, means for withdrawing the yarn remaining in the bunch on the bobbin, conveyor-means for conveying bobbins from the stripper, and means for delivering the stripped bobbins to the conveyor;

For use with a loom having fillin -changing mechanism for replenishing the filling the shuttle and ejecting spent bobbins therefrom, a bobbin-stripper for receiving the ejected bobbins, clamping means for holding the bobbins in fixed position, ineans for winding on yarn to withdraw it from a bobbin, means :for discharging the Waste yarn from the winding on means, and means for removing the stripped bobbin from the holding means and replacing it with another bobbin containing yarn.

5. For use with a loom having filling-changing mechanism for supplying Wound bobbins to the shuttle and electing spent bobbins therefrom, a bobbin-stripper having means for clamping and holding a bobbin, a rotary mandrel for Winding on the yarn to withdraw it from the bobbin, and means for catching and holding the yarn trailing from each bobbin and fastening its end to the mandrel to Wind it thereon.

6. For use With a loom having filling-changing mechanism for supplying wound bobbins to the shuttle and ejecting spent bobbins therefrom, a bobbin-stripper located adjacent the loom for re oeivi-ng the spent bobbins therefrom, means for holding the bobbins in fixed position in the stripper, means for retaining the length of yarn trailing from a bobbin as it enters the stripper, a re"- niandrel, means for attaching the trailing length of yarn to the mandrel to cause it to Wind thereon to withdraw it from the bobbin.

7. For use with a loom having filling-changing mechanism for supplying reserve bobbins to the shuttle and ejecting s ent bobbins therefrom, a bebbin stripper for receiving the spent bobbins, a. rotary mandrel for winding on the yarn to withdraw it from the spent bobbin, means for retaining. the length of yarntrailing from a bobbin as it is received in the stripper and attaching it tothe mandrel, means for delivering the stripped bobbins from the stripper, and a conveyor having magnetic means for attaching the stripped bobbins to transport them fromthe stripper.

8. A bobbin-stripper for removing the residue of yarn from spent bobbins including means "for receiving and holding the bobbins, rotary means for winding on the yarn to withdraw it from the bobbins, means for catching the length of yarn trai. n-g from a bobbin andatta'ching it to the winding means, and means for ejecting the" stripped bobbins from the homing means.

9. bobbin-stripper for removing the yarn rereceivinganaholding the bobbins, a rotary man- 6 drei for winding on theyarn to withdraw it from the bobbins, means for retaining the length of yarn trailing from "each bobbin and attaching it to the mandrel, and means for rogressively sischarging the yarn from the-mandrel it accu- Inmates thereon.

10. A bobbimstripper com rising a casing for receiving spent bobbins having a residue of yarn remaining thereon, means for holding a bobbin in fixed position Within'the casing, a rotary man drel for winding on the yarn to withdraw it from the held bobbin, means for attaching the length of yarn trailing from the bobbin to the Windingon mandrel, means for discharging the wound yarn from the mandrel as it accumulates thereon during the stripping operation, and a cornpartment in the casing for receiving the yarn discharged from the mandrel.

ll. A bobbin-stripper for removing the residue of yarn remaining on spent bobbins comprising means for receiving holding the bobbins, a rotary mandrel. for Winding on the yarn to Withdraw it from the bobbins, means for retaining the end of the yarn trailing from a bobbin as it enters the stripper, means for attaching said trailing end to the mandrel, and means reciprocating longitudinally 'of the mandrel to engage the yarn accumulating on the mandrel and discharge it from: the end thereof.

12. In a bobbin-stripper the combination of means -for receiving and holding a spent bobbin containing residual yarn remaining thereon, a rotary mandrel having a'conic'al periplreiy, means for rotating saidrnandrel, means for attaching the length of yarn trailing from the bobbin to the mandrel to Wind it thereon and withdraw it from the bobbin, a plurality of fingers spaced cireumferentially of the mandrel and slidable longitudinally thereof, and means to reciprocate said fingers during rotation oi.- the mandrel to cause them to push the accumulation of yarn oil from the end of the mandrel.

In a bobbiri-strippe1i the combination of a rotary mandrel for winding on yarn to Withdraw it from a bobbin held in the stripper, a rotary brush for catchingthe length of yarn trailing from the bobbin it enters the stripper, means for attaching theof the yarn held in the brush to the mandrel, means for progressively di lg'irigthe Wound yarn frorn the topre'verit an excessive accumulation thereon.

l4. Abo'bbi'nsomething-a rotary mand-1'el' for Winding on yer trerhove it from the bobbins,- means for rota ng said mandrel, a pluralit'y of reciprocating elements sli'dable longitudinally of the mandrel, a for reciprocating said elements to adapt them to engage the wound arn and push it "off from the endor" the mandrel as it accumulates thereon, and means for attaching" the yarn trailing from a bobbin to the mandrel to cause it to wine thereon to strip it from the bobbin.

lb. In a bobbin-stripper for receiving. spent bobbins and removing the residue of yarn therefrom, a rotary nl'aridrel for Winding on the yarn to withdraw it from" the bobbin, clamping means for holding the bobbin in the stripper, means for attaching the length of yarn trailing from the bobbin to the mandrel to cause it to Wind thereon, means for initiall supportin a bobbinadjacent the clamping means, and means operative to release said bobbin froin the sup ortin means and thereafter engage it with the clamping means.

is. In a bobbin-strip er for receiving s ent bobbins and removing: the residue oryarn' therefrom, a rotary mandret for winding on: the yarn to withdraw it from the bobbin, means for holding the bobbin in the stripper, means for attaching. the end of the yarntrailing front the bobbin to: therotarymandrel; meansfor initially supporting the bobbin adjacent the holding means; and reciprocatingv means operative! when moving in one direction to release the bobbin from the supporting, means and when moving in the'opp'osite-directionto engage the bobbin with the holding means; said'reciprocating means acting to engage the next bobbin released from the supporting meansand mo've itagainst the bobbin in the holding. means to release the latter therefrom after" the stripping operation:

1min a bobbin-stripper for receiving" spent bobbins and removingthe residue of yarn tiierefrom; a rotary mandrelfor'winding onthe yarn to-withdraw it r from the bobbin; clamping means 1 "for holding: abobbininthe stripper, a tiltable rest for supporting bobbin adjacent theol'amping means, aslide reciprocable to 1 engage the" rest and-tiltit to release the bobbin therefrom,.a'nd

means onsaidslide for engaging the" released:

bobbin and moving-- it into the clamping. means, said means engageable witlrthe next bobbin. releasedfromfithe. resttocarry it against thebobbin in the clamping means to disengage the latter therefrom and insert the next bobbin in the clamping means.

18. A bobbin-stripper comprising rotary means for winding on yarn to remove the residue from spent bobbins, means for retaining the length of yarn trailing from a bobbin and attaching it to the rotary means to cause it to wind thereon, clamping means for holding the bobbin in fixed position for delivering the yarn therefrom, and reciprocating means for engaging the butt of the bobbin with the clamping means, said reciprocating means engageable with the next bobbin entering the stripper to carry it against the bobbin in the clamping means and force the latter out therefrom and insert the last-received bobbin into the clamping means.

19. For use with a loom, a bobbin-stripper comprising a rotary mandrel for winding on yarn to withdraw the residue remaining on the bobbin, clamping means for retaining the bobbins in position for stripping the yarn therefrom, a reciprocating member for engaging the bobbins with the clamping means, and means driven from the loom for actuating said reciprocating member and rotating said mandrel.

' 20. For use with an automatic loom having filling-changing mechanism for transferring full bobbins to the shuttle and ejecting spent bobbins therefrom, a bobbin-stripper having a compartment for receiving the spent bobbins, a chute below the loom-shuttle for receiving the spent bobbins therefrom, a rotary brush between the chute and the compartment in the stripper, a rotary mandrel Within the stripper below the brush, means for holding a bobbin beneath the rotary mandrel, said brush acting to retain the yarn trailing from the bobbin as it enters the stripper, and means for attaching the trailing length of yarn to the mandrel to wind it thereon.

21. For use with an automatic loom having filling-changing mechanism for transferring full bobbins to the shuttle and ejecting spent bobbins therefrom, a bobbin-stripper adapted to be attached to the side of the loom, a chute for catchin the spent bobbins ejected from the shuttle and feeding them to the stripper, a rotary brush for retaining the length of yarn trailing from the bobbins, anrotary mandrel inthe stripper, and

bins and unwinding the residue of yarn therefrom' comprising" means for holding the long-th ef yarmtraihng-irom-the bobbin; a coni'cal drum for winding ontheyarn-toreinove it from the bobbin.

a plurality of bar-lil e fingers reciprocable 1ongiiiudinally of themandrel toengage thea'coilsof yarnwouhdthereonanddischargethem-irom'the end of the mandrel, a non-rotatable-camhavin means engagea'ble with the fingers to reciprocate them; and: means for holding the bobbin the stripper wliile the yarn is being unwoundtherefrom 1 23. Az bobbin -strippercomprising: a" casing divided into compartments, means for receiving and-holding a bobbin iir'one of thecompartments, a rotary mandrel for Wind-ingtori the yarn tounwinditirorrithe" bobbin, saidrnandrelha'ving its end'overly'ing one or the compartments of the casing, and means: slidable' oh' the mandrel to push; the yarn off therefrom to discharge it into another compartment of the casing.

' 2.4. In. a bobbimstri-pper for removing tlieyarn remaining: on spent bobbins, a casing for receiving the bobbins, meansfor winding on the' yarn to withdraw it from a bobbin held in the casing, means to eject the stripped bobbins from the easing, a pocket below the casing for receiving the stripped bobbins, a conveyor-belt traveling through the pocket, and permanent magnets carried by the conveyor-belt for attaching the spent bobbins thereto to transport them from the stripper.

25. In a bobbin-stripper for removing the residual yarn from spent bobbins, means for winding on the yarn to remove it from the bobbin, means engageable with the bobbins for fixedly holding them in the stripper, a reciprocating member for releasing a held bobbin from the holding means after the stripping operation, and a cam for reciprocating said member.

26. In a bobbin-stripper for removing residual yarn from spent bobbins, a rotary mandrel for winding on the yarn to strip it from a bobbin held in the stripper, a brush rotatable on an axis at right-angles to the axis of the mandrel and provided with radial bristles for catching and holding the length of yarn trailing from a bobbin delivered to the stripper, means for rotating the mandrel, and means for driving the brush during the rotation of the mandrel.

27. In a bobbin-stripper for removing residual yarn from spent bobbins, mean for holding a bobbin in the stripper, means for winding on the yarn to withdrawit from the bobbin, a driveshaft for rotating said windin means, ratchetmeans for rotating the drive-shaft, and a rockable lever adapted to be connected to an oscillating part of a loom to actuate the ratchet-means and drive the winding means.

28. In a bobbin-stripper for removing residual yarn from spent bobbins, means for holding the bobbins in the stripper, rotary means for winding on the yarn to withdraw it from a held bobbin, a casing for receiving bobbins delivered thereinto, an arm pivoted to the side of the casing, a rest pivoted to said arm and adapted to receive a bobbin thereon, clamping means for the bobbins adjacent said rest, and means reciprocable in the casing for engaging the rest to swing the arm and release a bobbin from the rest, said reciprocating means being engageable with a bobbin 1 released from the rest to force it into the clamping means.

29. In a bobbin-stripper for removing residual yarn from spent bobbins, a casing for receiving the bobbins, fixed clamping means having grooves for receiving the rings on the butt of the bobbin to hold it in the casing, a spring-actuated clamping arm for clamping the butt of the bobbin with its rings engaged in the grooves of the fixed clamping means, and means for moving a, bobbin into place between the clamping arm and the fixed clamping means.

30. In combination with a bobbin-stripper for removing the residual yarn from spent bobbins, a receptacle for receiving stripped bobbins, a conveyor travelable adjacent the bobbins in the receptacle, and magnetic means pivotally suspended on the conveyor to depend therefrom for engaging metal parts of the bobbin in the receptacle to attach them to said conveyor.

31. In combination, a receptacle for containing empty bobbins having metal clamping rings, a

, conveyor travelable above the bobbins in the receptacle, and a permanent magnet pivotally attached to said conveyor to adapt it to swing down into the receptacle and attract the metal. rings on the bobbins to attach the bobbins in suspended relationship on the conveyor.

32. In combination, a receptacle for containing bobbins having metal portions, a conveyor travelable above the receptacle in spaced relation to the bobbins, and magnets loosely suspended from the conveyor to adapt them to swing down into the receptacle and wipe across the bobbins to attract the metal portions thereof and attach the bobbins in suspended relationship on the conveyor.

WILLIAM V. GOODHUE. ROBERT E. MORTON.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,322,812 Morrill Nov. 23, 1919 1,496,098 Newell June 3, 1924 1,657,426 Willard Jan. 24, 1928 1,739,775 Baker Dec. 17, 1929 1,773,646 Skor Aug. 19, 1930 2,149,778 Kimbirl Mar. 7, 1939 2,192,997 Geier Mar. 12, 1940 2,234,300 Clough Mar. 11, 1941 2,303,048 Hudson Nov. 24, 1942 2,342,909 Terrell Feb. 29, 1944 2,526,253

Merrill Oct. 17, 1950 

